Canby, CA frost dates
Last spring frostJun 1median date
First fall frostSep 16median date
Growing season107 daysfrost-free
Hardiness zone7aZone 7a
How Canby compares
- In 8 years out of 10, the last spring frost in Canby falls between May 13 and June 20, a 38-day window. The first fall frost falls between September 1 and September 29.
- The median last frost is 62 days later than the California median of Mar 31.
- Its 107-day growing season is longer than 4% of the 636 California places with a regular frost season (state median 235 days).
- The last frost is 46 days later than the zone 7a median of Apr 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7a chart.
- The weather station records an average of 192 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 13 |
| 50% (median) | June 1 |
| 10% (safe for tender plants) | June 20 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 1 |
| 50% (median) | September 16 |
| 90% (late) | September 29 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Canby, CA
Canby, CA frost dates — last frost Jun 1, first frost Sep 16, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Mar 9 to Mar 23Transplant outside: May 4 to May 18
Start indoors: Mar 23 to Apr 6Transplant outside: Jun 15 to Jun 29
Start indoors: Mar 23 to Apr 6Transplant outside: Jun 15 to Jun 29
Start indoors: Apr 6 to Apr 20Transplant outside: Jun 8 to Jun 22
Start indoors: Apr 6 to Apr 20Transplant outside: May 11 to May 25Sow outdoors: May 4 to Jun 8Plant for fall: Jul 22 to Aug 19
Start indoors: Apr 6 to Apr 20Transplant outside: May 4 to May 18Sow outdoors: May 4 to May 18Plant for fall: Jul 8 to Jul 29
Start indoors: Apr 6 to Apr 20Transplant outside: May 18 to Jun 1
Start indoors: Apr 6 to Apr 20Transplant outside: May 11 to May 25
Start indoors: Apr 6 to Apr 20Transplant outside: May 18 to Jun 1
Start indoors: Apr 20 to May 4Transplant outside: Jun 22 to Jul 6Sow outdoors: Jun 22 to Jul 6
Start indoors: Apr 20 to May 4Transplant outside: Jun 8 to Jun 22
Sow outdoors: Apr 20 to May 11Plant for fall: Jun 24 to Jul 15
Sow outdoors: Apr 20 to May 11Plant for fall: Jul 22 to Aug 12
Sow outdoors: Apr 27 to Jun 8Plant for fall: Aug 5 to Aug 26
Start indoors: May 4 to May 11Transplant outside: Jun 15 to Jun 22Sow outdoors: Jun 8 to Jun 22
Start indoors: May 4 to May 11Sow outdoors: Jun 8 to Jun 22Plant for fall: Jul 8 to Jul 22
Start indoors: May 4 to May 11Sow outdoors: Jun 8 to Jun 22
Start indoors: May 4 to May 11Transplant outside: Jun 15 to Jun 29
Sow outdoors: May 11 to Jun 8Plant for fall: Jun 24 to Jul 8
Sow outdoors: May 11 to Jun 8Plant for fall: Jul 8 to Jul 22
Sow outdoors: May 11 to Jun 1
Sow outdoors: May 18 to Jun 15Plant for fall: Jul 8 to Jul 22
Sow outdoors: May 18 to Jun 8Plant for fall: Jul 22 to Aug 12
Sow outdoors: Jun 8 to Jun 29
Sow outdoors: Jun 8 to Jun 22
Transplant outside: Jun 15 to Jul 6
Plant for fall: Sep 2 to Oct 7
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Canby, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 9 – Mar 23 | May 4 – May 18 | — | — |
| Peppers | Mar 23 – Apr 6 | Jun 15 – Jun 29 | — | — |
| Eggplant | Mar 23 – Apr 6 | Jun 15 – Jun 29 | — | — |
| Tomatoes | Apr 6 – Apr 20 | Jun 8 – Jun 22 | — | — |
| Lettuce | Apr 6 – Apr 20 | May 11 – May 25 | May 4 – Jun 8 | Jul 22 – Aug 19 |
| Kale | Apr 6 – Apr 20 | May 4 – May 18 | May 4 – May 18 | Jul 8 – Jul 29 |
| Broccoli | Apr 6 – Apr 20 | May 18 – Jun 1 | — | — |
| Cabbage | Apr 6 – Apr 20 | May 11 – May 25 | — | — |
| Cauliflower | Apr 6 – Apr 20 | May 18 – Jun 1 | — | — |
| Okra | Apr 20 – May 4 | Jun 22 – Jul 6 | Jun 22 – Jul 6 | — |
| Basil | Apr 20 – May 4 | Jun 8 – Jun 22 | — | — |
| Peas | — | — | Apr 20 – May 11 | Jun 24 – Jul 15 |
| Spinach | — | — | Apr 20 – May 11 | Jul 22 – Aug 12 |
| Radishes | — | — | Apr 27 – Jun 8 | Aug 5 – Aug 26 |
| Cucumbers | May 4 – May 11 | Jun 15 – Jun 22 | Jun 8 – Jun 22 | — |
| Zucchini & Summer Squash | May 4 – May 11 | — | Jun 8 – Jun 22 | Jul 8 – Jul 22 |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 107 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 4 – May 11 | — | Jun 8 – Jun 22 | — |
| Melons & Watermelon | May 4 – May 11 | Jun 15 – Jun 29 | — | — |
| Carrots | — | — | May 11 – Jun 8 | Jun 24 – Jul 8 |
| Beets | — | — | May 11 – Jun 8 | Jul 8 – Jul 22 |
| Potatoes | — | — | May 11 – Jun 1 | — |
| Swiss Chard | — | — | May 18 – Jun 15 | Jul 8 – Jul 22 |
| Cilantro | — | — | May 18 – Jun 8 | Jul 22 – Aug 12 |
| Green Beans | — | — | Jun 8 – Jun 29 | — |
| Sweet Corn | — | — | Jun 8 – Jun 22 | — |
| Sweet Potatoes Warning: Your frost-free season is about 107 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 15 – Jul 6 | — | — |
| Garlic | — | — | — | Sep 2 – Oct 7 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Canby 3 Sw, CA weather station, 5 km away (elevation 4,311 ft (1,314 m)).
Frost dates near Canby
- Adin May 28 · Sep 29
- Alturas Jun 3 · Sep 13
- Lookout May 28 · Sep 29
- Bieber May 28 · Sep 29
- Likely Jun 14 · Sep 18
- Nubieber May 28 · Sep 29
- Davis Creek May 26 · Oct 1
- Mcarthur May 29 · Sep 19
- Madeline Jun 14 · Sep 18
- Termo May 28 · Sep 29
Frequently asked questions
When is the last frost in Canby, CA?
The median last spring frost in Canby, CA is June 1. There is still about a 10% chance of frost after June 20, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Canby, CA?
The median first fall frost is September 16, with about a 10% chance of frost before September 1.
How long is the growing season in Canby, CA?
About 107 days between the median last spring frost and first fall frost.
What planting zone is Canby, CA?
Canby, CA is in USDA hardiness zone 7a.